Diagnostics improvements for 3.9

[Richard Smith via cfe-commits]

On Fri, Aug 5, 2016 at 6:33 PM, Richard Smith <richard at metafoo.co.uk> wrote:

> These all look OK for the branch. Hans, the second one fixes a crasher, so
> I'd like to take at least that one. The others fix warning false positives
> (which are not regressions) and look fairly safe.
>

Correction: looks like the final one is in fact a fix for a diagnostic
regression.


> On Fri, Aug 5, 2016 at 4:39 PM, Richard Trieu <rtrieu at google.com> wrote:
>
>> Hans, Richard,
>>
>> These are some last minute diagnostic improvements for 3.9.
>>
>> http://llvm.org/viewvc/llvm-project?rev=277796&view=rev
>> r277796
>> Don't warn when negative values, like -1, are used to initialize unsigned
>> bit fields.
>>
>> http://llvm.org/viewvc/llvm-project?rev=277797&view=rev
>> r277797
>> Fix crash with type alias in Template Type Diffing
>>
>
> (You have a typo Internalal in this.)
>
>
>> http://llvm.org/viewvc/llvm-project?rev=277866&view=rev
>> r277866
>> Fix false positive in -Wunsequenced and templates
>>
>> http://llvm.org/viewvc/llvm-project?rev=277889&view=rev
>> r277889
>> Fixes for two false positives in -Wreturn-stack-address dealing with
>> parameter variables and reference to pointer types.
>>
>
> (Test has some x3 variables that are unused.)
>
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